Ancient cave art discovery suggests first known humans in Ireland walked over from Wales

Scientists found old cave art in Ireland. This art shows that the first people in Ireland came from Wales. They walked over a land bridge. This happened during the last Ice Age.

Researchers think there was a land bridge between Wales and Ireland. This bridge is now lost. It was covered by water when the ice melted. This discovery is very important. It helps us learn more about early humans in Ireland.